scholarly journals Mortality on grower/finisher-only swine operations in the United States

1999 ◽  
Vol 51 (2) ◽  
pp. 141-147 ◽  
Author(s):  
W.C. Losinger ◽  
E.J. Bush ◽  
M.A. Smith ◽  
B.A. Corso
Keyword(s):  
United States ◽  
Monitoring System ◽  
Health Monitoring ◽  
Animal Health ◽  
The United States ◽  
Exact Test ◽  
Health Monitoring System ◽  
Fisher’S Exact Test ◽  
Swine Operations ◽  
Percent Mortality

For 53 grower/finisher-only swine operations that participated in the United States National Animal Health Monitoring System 1995 National Swine Study, mortality among finisher pigs ranged from 0 to 12.0% over a 6-month period. Twenty-six (49.1%) had <2% mortality, and 27 (50.9%) had >2% mortality. Nine (17.0%) operations experienced >4% mortality. Fisher's exact test revealed that operations with all-in all-out management were significantly more likely to have <2% mortality than operations with continuous management, and that operations where all finisher pigs came from farrowing units belonging to the operation (either on-site or off-site) were significantly more likely to have <2% mortality than operations where >1 grower/finisher pig came from another source. Larger operations (where >900 pigs entered the grower/finisher phase) practiced all-in, all-out management more frequently than smaller operations, and had a lower mean percent mortality than smaller operations. Diagnosis of Salmonella in finisher pigs performed at a laboratory or by a veterinarian in the 12 months prior to interview was associated with both increased percent mortality and increased percent mortality per day.

Design and implementation of the United States National Animal Health Monitoring System 1995 National Swine Study

1998 ◽  
Vol 34 (2-3) ◽  
pp. 147-159 ◽  
Author(s):  
Willard C Losinger ◽  
Eric J Bush ◽  
George W Hill ◽  
Marty A Smith ◽  
Lindsey P Garber ◽  
...  
Keyword(s):  
United States ◽  
Monitoring System ◽  
Health Monitoring ◽  
Animal Health ◽  
The United States ◽  
Health Monitoring System ◽  
Design And Implementation

scholarly journals Prevalence and Characterization of Shiga Toxin-Producing Escherichia coli in Swine Feces Recovered in the National Animal Health Monitoring System's Swine 2000 Study

2004 ◽  
Vol 70 (12) ◽  
pp. 7173-7178 ◽  
Author(s):  
Pina M. Fratamico ◽  
Lori K. Bagi ◽  
Eric J. Bush ◽  
Barbara T. Solow
Keyword(s):  
United States ◽  
Escherichia Coli ◽  
Health Monitoring ◽  
Shiga Toxin ◽  
Animal Health ◽  
The United States ◽  
Fecal Samples ◽  
Toxin Genes ◽  
Swine Operations ◽  
Swine Feces

ABSTRACT A study was conducted to determine the prevalence of Shiga toxin-producing Escherichia coli (STEC) in swine feces in the United States as part of the National Animal Health Monitoring System's Swine 2000 study. Fecal samples collected from swine operations from 13 of the top 17 swine-producing states were tested for the presence of STEC. After enrichment of swine fecal samples in tryptic soy broth, the samples were tested for the presence of stx 1 and stx 2 by use of the TaqMan E. coli STX1 and STX2 PCR assays. Enrichments of samples positive for stx 1 and/or stx 2 were plated, and colony hybridization was performed using digoxigenin-labeled probes complementary to the stx 1 and stx 2 genes. Positive colonies were picked and confirmed by PCR for the presence of the stx 1, stx 2, or stx 2e genes, and the isolates were serotyped. Out of 687 fecal samples tested using the TaqMan assays, 70% (484 of 687) were positive for Shiga toxin genes, and 54% (370 of 687), 64% (436 of 687), and 38% (261 of 687) were positive for stx 1, stx 2, and both toxin genes, respectively. Out of 219 isolates that were characterized, 29 (13%) produced stx 1, 14 (6%) produced stx 2, and 176 (80%) produced stx 2e. Twenty-three fecal samples contained at least two STEC strains that had different serotypes but that had the same toxin genes or included a strain that possessed stx 1 in addition to a strain that possessed stx 2 or stx 2e. The STEC isolates belonged to various serogroups, including O2, O5, O7, O8, O9, OX10, O11, O15, OX18, O20, O57, O65, O68, O69, O78, O91, O96, O100, O101, O120, O121, O152, O159, O160, O163, and O untypeable. It is noteworthy that no isolates of serogroup O157 were recovered. Results of this study indicate that swine in the United States harbor STEC that can potentially cause human illness.

California National Animal Health Monitoring System for Meat Turkey Flocks: 1988-89 Pilot Study: Management Practices, Flock Health, and Production

1996 ◽  
Vol 40 (2) ◽  
pp. 278 ◽  
Author(s):  
Kathryn H. Christiansen ◽  
David W. Hird ◽  
Kurt P. Snipes ◽  
Cyrus Danaye-Elmi ◽  
Charles W. Palmer ◽  
...  
Keyword(s):  
Pilot Study ◽  
Monitoring System ◽  
Health Monitoring ◽  
Management Practices ◽  
Animal Health ◽  
Health Monitoring System ◽  
Study Management

The national animal health monitoring system in Colorado beef herds: Disease rates and their associated costs

1990 ◽  
Vol 8 (2-3) ◽  
pp. 203-214 ◽  
Author(s):  
M.D. Salman ◽  
M.E. King ◽  
T.E. Wittum ◽  
C.R. Curtis ◽  
K.G. Odde ◽  
...  
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Animal Health ◽  
Health Monitoring System ◽  
Disease Rates ◽  
Beef Herds

Isolation and Characterization of Yersinia enterocolitica from Swine Feces Recovered during the National Animal Health Monitoring System Swine 2000 Study†

2006 ◽  
Vol 69 (9) ◽  
pp. 2107-2112 ◽  
Author(s):  
SAUMYA BHADURI ◽  
IRENE WESLEY
Keyword(s):  
Yersinia Enterocolitica ◽  
Health Monitoring ◽  
Animal Health ◽  
The United States ◽  
National Study ◽  
Virulence Plasmid ◽  
Fecal Samples ◽  
Serotype O ◽  
Isolation And Characterization ◽  
Swine Operations

A national study was conducted for the isolation of pathogenic Yersinia enterocolitica in pig feces in the United States as part of the National Animal Health Monitoring System's Swine 2000 study. Fecal samples collected from swine operations from September 2000 to March 2001 from 77 production sites in 15 of the top 17 swine-producing states were tested for the presence of pathogenic Y. enterocolitica. After enrichment of swine fecal samples in irgasan–ticarcillin–potassium chlorate broth, the enriched cultures were plated on cefsulodin-irgasan-novobiocin agar for isolation of presumptive Y. enterocolitica. The isolates were confirmed as pathogenic Y. enterocolitica by the fluorogenic 5′ nuclease PCR assay targeting the chromosomal attachment invasion ail gene. Of 2,793 fecal samples tested, 106 (3.80%) ail-positive strains of Y. enterocolitica were isolated. These 106 ail-positive isolates originated from 7 of the 15 participating states. The predominant serotype O:3 (n = 79 of 106) was distributed in five states (n = 5 of 7). Serotype O:5 (n = 27 of 106) was also found in five states (n = 5 of 7). All isolates contained the virulence plasmid and expressed virulence-associated phenotypic characteristics. These results indicate that swine in the United Stares harbor Y. enterocolitica that can potentially cause human illness.

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